Answers

LG

Answered

Which type(s) of muscle tissue is/are striated?

A) Skeletal only
B) Smooth only
C) Skeletal and cardiac
D) Skeletal and smooth
E) Cardiac only

On Aug 07, 2024


C
LG

Answered

If cardiac muscle cells are unable to repolarize, this would cause

A) cardiac output to increase.
B) no harm. These cells can spontaneously depolarize anyway.
C) the heart rate to decrease. It might cause cardiac arrest.
D) an increased demand on mitochondria to produce more ATP.
E) tachycardia.

On Jul 20, 2024


C
LG

Answered

Formed elements make up about 55% of the volume of the blood, and plasma makes up 45%.

On Jul 07, 2024


False
LG

Answered

Fluid-filled sacs that may store amino acids, sugars, toxins, and ions in plant cells are called ____.

A) plastids
B) central vacuoles
C) peroxisomes
D) lysosomes
E) Golgi bodies

On Jun 16, 2024


B
LG

Answered

The knuckles of the hand are formed by the distal ends of the ________.

A) carpals
B) metacarpals
C) phalanges
D) tarsals
E) metatarsals

On Jun 07, 2024


B
LG

Answered

Compare a viral lytic cycle and a viral lysogenic cycle.

On Jun 06, 2024


In a lytic infection, the virus destroys the host cell. The virus takes over the host cell's metabolism and forces the host cell to replicate viral particles. Lytic infections result in cell lysis and death.
In lysogenic infections, temperate viruses integrate into the host DNA. The integrated virus is called a provirus. When the bacterial DNA replicates, the provirus DNA replicates with the host cell genome. Temperate viruses revert to lytic cycles under stress conditions.
LG

Answered

The stage of meiosis that makes descendant cells haploid is ____.

A) prophase I
B) prophase II
C) anaphase I
D) anaphase II
E) metaphase I

On May 08, 2024


C
LG

Answered

Receptors for most lipid-soluble hormones are located

A) in the cytoplasm of their target cells.
B) on the plasma membrane of their target cells.
C) in the lysosomes of their target cells.
D) on the nuclear membrane of their target cells.
E) in the nucleus or cytoplasm of their target cells.

On May 07, 2024


E
LG

Answered

Xylem tissue contains

A) vessel elements and tracheids.
B) sieve-tube members and companion cells.
C) apical meristem.
D) epidermis and ground tissue.
E) parenchyma and sclerenchyma cells.

On May 06, 2024


A
LG

Answered

Which organelles settle on the bottom of gravity-sensing cells?

A) vacuoles
B) nuclei
C) lysosomes
D) statoliths
E) chloroplasts

On May 04, 2024


D